Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...457..752a&link_type=abstract
Astrophysical Journal v.457, p.752
Astronomy and Astrophysics
Astronomy
22
Ism: H Ii Regions, Hydrodynamics, Ism: Bubbles, Galaxies: Magellanic Clouds, Ism: Supernova Remnants, X-Rays: Ism
Scientific paper
Observations of H II complexes surrounding OB associations in the Large Magellanic Cloud have revealed X-ray luminosities that cannot be explained by stellar winds alone or by supernova remnants (SNRs) evolving inside stellar-wind bubbles. In neither case would there be enough matter inside the bubbles to produce the observed flux. We propose a model in which a SNR evolves inside an extremely diffuse stellar-wind bubble (formed by the OB association stars) but the density in the SNR is augmented through hydrodynamic ablation of cool, dense clumps by the post-blast wave SNR flow. We present hydrodynamic calculations, including a nonequilibrium treatment of the ionization and cooling, of the evolution of such mass-loaded SNRs. We show that the models naturally explain many of the properties of the observed diffuse X-rays. In particular, we find close quantitative agreement between one of our models and observed parameters of N51D.
Arthur Jane S.
Henney William J.
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